This sounds like it could be the answer. As soon as i track down the acad.lin file and checkout the code, i will confirm or deny your speculation.
Thanks for pointing me in what seems to be the right direction.
Patchy, you are da man (or da woman) and i thank you.
Apparently, Autodesk changed the "R" to "U" in the line type definitions some release ago and this user had defined a couple custom linetypes and wanted to keep them so he kept replacing the new acad.lin file with his own.
It hard to keep track of what each user is doing especially when they think they're not doing anything out of the ordinary.
thank you very much, that's a very interesting info
did a little more search and find out that the 'U' function is starting only from R2011
but did not find it in help files
the 'R' function still exist and the 'U' function is an addition to the other existing functions
for more info you need to read the online help in:-
Customization Guide\Custom Linetypes\Shapes in Custom Linetypes
I guess since "R" defaults to 0 if not specified, this is why my acad.lin file almost never specifies its value.
On the other hand, the help file reference you gave was helpful but it doesn't address the "U" as you pointed out in your earlier post.
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